From cb870fadaaf74fbceb7a150861cfa37370836a42 Mon Sep 17 00:00:00 2001
From: John-Mark Gurney <jmg@funkthat.com>
Date: Sun, 24 Nov 2019 16:43:45 -0800
Subject: [PATCH] add scripts and stuff necessary to automatically generate the
 diagram using graph-easy... required writting a simple awk script to add the
 necessary border for MarkDeep.. haven't integrated the diagram generation
 into the file yet..

---
 Makefile     |  6 ++++++
 box.sh       | 32 ++++++++++++++++++++++++++++++++
 diag.txt     | 25 +++++++++++++++++++++++++
 diag_inp.txt |  9 +++++++++
 4 files changed, 72 insertions(+)
 create mode 100644 Makefile
 create mode 100644 box.sh
 create mode 100644 diag.txt
 create mode 100644 diag_inp.txt

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d6b5ff6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,6 @@
+# https://github.com/ironcamel/Graph-Easy
+diag.txt: diag_inp.txt box.sh
+	graph-easy < $< | sh box.sh > $@
+
+diagtest:
+	ls box.sh diag_inp.txt Makefile | entr sh -c 'make diag.txt && cat diag.txt'
diff --git a/box.sh b/box.sh
new file mode 100644
index 0000000..df74250
--- /dev/null
+++ b/box.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+fname=$(mktemp foobar.XXXXX)
+cat > "$fname"
+awk '
+maxline == 1 {
+	if (maxlength < length)
+		maxlength = length
+}
+
+function printtop () {
+	blank = ""
+	for (i = 0; i < maxlength + 4; i++)
+		blank = blank "*"
+	printf("%s\n", blank)
+}
+
+output == 1 && FNR == 1 {
+	printtop()
+	printf("* %*s *\n", maxlength, "")
+}
+
+output == 1 {
+	printf("* %s%*s *\n", $0, maxlength - length, "")
+}
+
+END {
+	printf("* %*s *\n", maxlength, "")
+	printtop()
+}
+' maxline=1 "$fname" maxline=0 output=1 "$fname"
+
+rm "$fname"
diff --git a/diag.txt b/diag.txt
new file mode 100644
index 0000000..437b062
--- /dev/null
+++ b/diag.txt
@@ -0,0 +1,25 @@
+*********************************************************************************
+*                                                                               *
+*                                                +-------------+                *
+*                                                |  Internet   |                *
+*                                                +-------------+                *
+*                                                  |                            *
+*                                                  |                            *
+*                                                  |                            *
+* +----------------+                             +-------------+                *
+* |  Host machine  |-----------------------------| VLAN Switch |                *
+* +----------------+                             +-------------+                *
+*   |                                              |                            *
+*   |                                              |                            *
+*   |                                              |                            *
+* +----------------+     +-----------------+     +-------------+     +--------+ *
+* |    USB Hub     | --- | Power Controler | --- |  RockPro64  |     | 12V PS | *
+* +----------------+     +-----------------+     +-------------+     +--------+ *
+*   |                      |                       |                   |        *
+*   |                      +-----------------------+-------------------+        *
+*   |                                              |                            *
+* +----------------+                               |                            *
+* | Serial adapter |-------------------------------+                            *
+* +----------------+                                                            *
+*                                                                               *
+*********************************************************************************
diff --git a/diag_inp.txt b/diag_inp.txt
new file mode 100644
index 0000000..73a1a26
--- /dev/null
+++ b/diag_inp.txt
@@ -0,0 +1,9 @@
+[ Internet ] { flow: north } -- [ VLAN Switch ]
+[ Host machine ] -- [ VLAN Switch ]
+[ Host machine ] { flow: south } -- [ USB Hub ]
+[ RockPro64 ] { flow: north } -- [ VLAN Switch ]
+[ USB Hub ] -- [ Power Controler ]
+[ USB Hub ] -- [ Serial adapter ]
+[ Serial adapter ] -- [ RockPro64 ]
+[ Power Controler ] -- [ 12V PS ]
+[ Power Controler ] { flow: east } -- [ RockPro64 ]